Multimedia event with MCLA and DownStreet Art, music, costumes, projections. Live music by C Ryder Cooley and the Dust Bowl Fairies, and Shana Falana, psychedelic pop, 8 p.m. at Branch Gallery, 18 Holden St. Opening of ‘Rewilderment: Passing through the veil between worlds,' mixed-media exploation of witchcraft and mediumistic practices, at MCLA Gallery 51. North Adams. www.mcla.edu/presents

Berkshire hauntings

"Haunts, Legends and Ghost Stories" exhibit, North Adams Museum of History and Science in Building 5A Western Gateway Heritage State Park. Open 10 a.m. to 4 p.m., North Adams. (413) 664-4700 or visit www.northadamshistory.org.

Lee Outlets

Trick-or-Treating; children can celebrate the fall season during the witching hours of 5-8 p.m. Customer service, in the food court, will offer children free trick-or-treat bags. 17 Premium Outlets Boulevard, Lee. (413) 243-8186.

"Haunts, Legends and Ghost Stories" exhibit, North Adams Museum of History and Science in Building 5A Western Gateway Heritage State Park. Open 10 a.m. to 4 p.m., North Adams. (413) 664-4700 or visit www.northadamshistory.org.

Community dance with guest caller and National Heritage Fellow Dudley Laufman, live music from Still the Homegrown Band, 7:30 p.m. Town Hall, Cornwall, Conn. (860) 672-6101.

Fiber Festival of New England

Vendors and fiber enthusiasts come together to promote the use of wool and other natural fibers and related products to the general public. Shopping opportunities and fun for the whole family. Hosted by the Eastern States Exposition and the New England Sheep and Wool Growers Association. In the Mallary Complex, 9 a.m. to 5 p.m., West Springfield. Information and tickets visit FiberFestival.org.

Hoosic River Conference

Hoosic River Watershed Association's State of the River conference, 9:30 a.m. to noon. Focus on PCBs in the Housatonic, Hudson and Hoosic rivers. Williams College professors David Richardson and Jay Thoman and students present research. First Congregational Church, 906 Main St., Route 2, Williamstown. hoorwa.org

Vendors and fiber enthusiasts come together to promote the use of wool and other natural fibers and related products to the general public. Shopping opportunities and fun for the whole family. Hosted by the Eastern States Exposition and the New England Sheep and Wool Growers Association. In the Mallary Complex, 9 a.m. to 3 p.m., West Springfield. Information and tickets visit FiberFestival.org.

"Haunts, Legends and Ghost Stories" exhibit, North Adams Museum of History and Science in Building 5A Western Gateway Heritage State Park. Open 10 a.m. to 4 p.m., North Adams. (413) 664-4700 or visit www.northadamshistory.org.

Tierney Conservation Area

Help clean up the Tierney Conservation Area. Wear old clothes and sturdy footwear. Sponsored by the Berkshire Environmental Action Team and the City of Pittsfield. BEAT works to protect the environment for wildlife. 1 to 3 p.m. Pittsfield.

Wedding expo

The best of local vendors will transform the National Museum of Dance into a wedding wonderland: caterers, photographers, jewelers, entertainers, bridal shops, and more. 60 Capital Region vendors. 1-4 p.m., free and open to the public. Information contact Jo at (518) 584-2225 ext. 3003. 99 South Broadway, Saratoga Springs, N.Y.

Guided natural history hike on the new section of the Pine Cobble trail and lesser-known areas, 1 p.m., with Williamstown Rural Lands Foundation and geoscientist David Gethier. Rock ledges, Bear Spring, two ancient shorelines -- one formed by Lake Bascom 14,000 years ago and the other a tropical shoreline from 500 million years ago. (413) 458-2494, www.wrlf.org.

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